中文摘要：

有 Cu/Zn/Al 的各种各样的金属作文的一系列 Cu-ZnO-Al2O3 催化剂被一起沉淀方法准备，并且为甘油屏蔽了 hydrogenolysis 到丙烯乙二醇。有 1 的 Cu/Zn/Al 臼齿的比率的催化剂：1：0.5 为甘油 hydrogenolysis 展出了最好的表演，并且因此为运动调查选择了。在外部、内部的散开限制的消除下面，运动实验在 3.0-5.0 MPa 的一个氢压力范围和 493-513 K 的一个温度范围在一个等温的改正床反应堆被执行。基于脱水加氢二拍子的圆舞 hydrogenolysis 机制，考虑甘油的竞争吸附的一个二地点的 Langmuir-Hinshelwood 运动模型， acetol 和丙烯乙二醇被建议并且成功地适合到试验性的数据。在甘油和丙烯乙二醇的观察并且预言的插头集中之间的平均相对错误分别地是 6.3% 和 7.6% 。运动并且吸附参数被和 Rosenbrock 算法使用第四顺序的 Runge-Kutta 方法估计。为脱水和加氢反应的激活精力是 86.56 和 57.80 kJ ???????  ???????????? 铺 ? 鯛吗？？

英文摘要：

A series of Cu-ZnO-Al2O3 catalysts with various metal compositions of Cu/Zn/Al were prepared by the co-precipitation method,and screened for glycerol hydrogenolysis to propylene glycol.The catalyst with a Cu/Zn/Al molar ratio of 1：1：0.5 exhibited the best performance for glycerol hydrogenolysis,and thus selected for kinetic investigation.Under elimination of external and internal diffusion limitation,kinetic experiments were performed in an isothermal fixed-bed reactor at a hydrogen pressure range of 3.0-5.0 MPa and a temperature range of 493-513 K. Based on a dehydration-hydrogenation two-step hydrogenolysis mechanism,a two-site Langmuir-Hinshelwood kinetic model taking into account competitive adsorption of glycerol,acetol and propylene glycol was proposed and successfully fitted to the experimental data.The average relative errors between observed and predicted outlet concentrations of glycerol and propylene glycol were 6.3%and 7.6%,respectively.The kinetic and adsorption parameters were estimated by using the fourth-order Runge-Kutta method together with the Rosenbrock algorithm.The activation energies for dehydration and hydrogenation reactions were 86.56 and 57.80 kJ·mol^-1,respectively.